12669703938 has 20 divisors (see below), whose sum is σ = 28389522150. Its totient is φ = 4223234592.

The previous prime is 12669703933. The next prime is 12669703987. The reversal of 12669703938 is 83930796621.

12669703938 is a `hidden beast` number, since 126 + 69 + 70 + 393 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8816646609 + 3853057329 = 93897^2 + 62073^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12669703933) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39103863 + ... + 39104186.

Almost surely, 2^12669703938 is an apocalyptic number.

12669703938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12669703938 is an abundant number, since it is smaller than the sum of its proper divisors (15719818212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12669703938 is an equidigital number, since it uses as much as digits as its factorization.

12669703938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78208063 (or 78208054 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 12669703938 in words is "twelve billion, six hundred sixty-nine million, seven hundred three thousand, nine hundred thirty-eight".